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When a piece of metal is illuminated by a monochromatic light of wavelength λ, then stopping potential is 3Vs. When same surface is illuminated by light of wavelength 2λ, then stopping potential becomes Vs. The value of threshold wavelength for photoelectric emission will be
Options
(a) (4λ)/3
(b) 6λ
(c) 4λ
(d) 8λ
Correct Answer:
4λ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A transverse wave is represented by y = a sin (?t – kx)
- Three resistances P,Q,R each of 2Ω and an unknown resistances S form the four arms
- A beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- An electric dipole of dipole moment p is placed in a uniform external electric field
- The radius of gyration of a solid sphere of radius r about a certain axis is r
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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